Hello guys. Sorry i`m very new to all this, so my question may be lame. sorry again if i`m breaking any forum rules.
I`m trying to build an electric confetti launcher for disposable cannons like the ones here http://www.confettimaster.com/streamer.electric.confetti.cannons.html
Basically each disposable barrel holds a sealed co2 tank. The output plug holds two wires connected to something like nichrome thread. When you drive enough current through those wires the nichrome warms up, burns the seal and the canon go boom. There are nothing sophisticated there, i tried shooting them with a simple 12 V battery and everything worked fine.
Now i`m trying to use arduino to set up a wireless launcher and since i don`t have any education on electronics i cant calculate a proper way to connect the cannon to arduino.
My guess is that i need some kind of mosfet to drive enough current but i have no guess how to choose the right one.
For example, i have some IRF530A - they can hold up to 14 A current. Is that enough? I`m going to use 12v lead-acid batteries, they can give extreme high ampreage.
Besides, is it ok to connect mosfet directly to the cannon, or perhaps i need to put some resistors somewhere in between? Or some optoisolator to break the circuit?